Re: Display resolution 3840x2160@24rb stopped working after Upgrade from Stretch to Buster
Dear Charles,
On Monday, September 9, 2019, 1:55:06 PM GMT+2, Charles Curley wrote:
>> On Mon, 9 Sep 2019 10:20:37+0000 (UTC) Jan Michael Greiner wrote:
>> With Debian Stretch (9.8) I had the display running with 3840x2160
>> resolution at 24Hz reduced blank.
>> [What worked with Debian Stretch (9.9)]
>> export modename="3840x2160_24.00_rb"
>> xrandr --newmode $modename 209.75 3840 3888 3920 4000 2160 2163 2168 2185 +HSync -Vsync
>> xrandr --addmode HDMI-1 $modename
>> xrandr --output HDMI-1 --mode $modename
>> [Problem with Debian Buster (10.1)]
>> xrandr --output XWAYLAND1 --mode $modename
>> xrandr: Configure crtc0 failed
>And I take it you want to reproduce that on Debian 10 (buster). I
> suggest you:
> * Install arandr.
>[...]
Thank you for making me aware of arandr. However, from what I learned:
- arandr is merely a graphical tool for xrandr, so if something does not work with xrandr, arandr will not be able to help
- I did not see any option in the arandr gui to add a non yet existing resolution (and I would like to add a 24Hz reduced blank resolution)
To rephrase my question: How can I enable a custom screen resolution and refresh rate (with my specific modeline) with Debian Buster (Wayland)?
Thank you and best regards
JM
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